People quit drinking on their own once and for good and its been happening for ever. Infact quitting drinking is quite easy YOU JUST DONT DRINK AGAIN EVER! And statistically speaking he has a better chance of staying sober than others using a traditional 12 step programme! If hes an alcoholic or not what differances does it make if he will never drink again!!
Aa will tell you he is in denial, is a dry drunk blah blah blah the point is hes been sober as long as you!
If he has given up drink how can he be recovering, he is recovered!!!!